Borrowing it
Nothing to install: this file belongs to nirholas/XActions. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/nirholas/XActions/main/AGENTS.mdgit clone --depth 1 https://github.com/nirholas/XActionsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/nirholas/xactions/agents-md)<a href="https://agentmods.dev/instructions/nirholas/xactions/agents-md"><img src="https://agentmods.dev/badge/instructions/nirholas/xactions/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/nirholas/xactions/agents-md"><img src="https://agentmods.dev/badge/instructions/nirholas/xactions/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.04515 | $0.04515 |
| Opus 5.5 | $0.01806 | $0.01806 |
| Sonnet 5.5 | $0.00903 | $0.00903 |
| Haiku 4.5 | $0.00451 | $0.00451 |
Grade A, and why
XActions AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 16d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 420 lines — stays where its author put it; the contents beside it link to each section on GitHub.
XActions for agents
X/Twitter automation with no X API key: a 56-command CLI, a Node library, 152 MCP tools, 50 agent skills, 95 browser console scripts, and a web dashboard. Apache-2.0, by nichxbt.
This file is for the agent, not the human. It answers one question first, because getting it wrong costs the whole session: do you shell out to the CLI, or do you load the MCP server?
Two lanes into the same engine
XActions ships both lanes from one install, and they call the same code. The difference is what each costs you before you have read a single tweet.
| CLI lane | MCP lane | |
|---|---|---|
| How you call it | one Bash call, xactions <cmd> --compact |
a tool call, after the client connects the server |
| What loads into context up front | nothing | the whole tool list |
| What comes back | the rows you asked for, one per line | a JSON result object |
| Writes | reads, plus engage and bulk |
every write tool, with an approval gate |
| Usable without client configuration | yes, it is just a process | no, the client must be configured first |
The tool list is not small. The server advertises 152 tools, and the
tools/list payload it serves is about 60 KB of JSON before you have done any
work at all. Measure it yourself:
node -e "import('./src/mcp/server.js').then(m => console.log(JSON.stringify(m.TOOLS).length, 'bytes,', m.TOOLS.length, 'tools'))"
That cost is worth paying when you are going to make many calls in a session, keep state between them, or write. It is not worth paying to answer "how many followers does this account have."
The rule
Reading a handful of things? Shell out. Working a long session, or writing? Load the server.
Concretely, prefer the CLI when:
- You need one or two facts and then you are done.
- You are inside a larger task where X is a detail, not the subject.
- You want to pipe, filter, or count the result with
jq,grep,sort,wc, or feed it to another command in the same Bash call. - The client has no MCP configuration and you are not going to add one.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 16d ago Changed · +5 lines · +100 tokens per session 3ffd7dbbba2f
- 1mo ago First seen · 415 lines · 4,415 tokens per session scan A 4198850da945
XActions AGENTS.md is an instructions file published in the GitHub repository nirholas/XActions (596 stars, last pushed 2d ago), licensed Apache-2.0. It adds 4,515 tokens to every session, about $0.0181 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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